西安市土地资源承载力评价及障碍因素分析

Evaluation of land resources carrying capacity in Xi’an and analysis of obstacle factors

从人口、经济、社会和生态四个方面选取15个指标,构建指标体系,并运用主成分分析法对西安市2009~2018年土地资源承载力变化进行分析和评价,分析子系统的耦合协调度和障碍度,并判断影响西安市发展的障碍因素。结果表明:西安市土地资源承载力从0.2727上升为0.7379,提升速度快,仍有很大的发展空间;经济和社会承载力波动幅度较大,对西安市土地资源综合承载力的提升贡献较大,而人口和生态承载力上升幅度较小;西安市土地承载力水平和耦合协调度变化情况具有高度相似性,两者表现出很强的相关性,在研究期内两者同步提高;各子系统障碍度排序:人口障碍度>经济障碍度>社会障碍度>生态障碍度;从障碍因素来看,人口密度、人口自然增长率、人均粮食占有量、空气质量优良率是影响西安市土地资源承载力发展的主要因素,且研究符合西安市经济和社会发展情况。

Based on related research theories,this paper selects 15 indicators from the four aspects of population,economy,society,and ecology,constructs an indicator system,and uses the principal component analysis method to analyze and evaluate changes in the carrying capacity of land resources in Xi’an from 2009 to 2018.To further analyze the coupling coordination degree and obstacle degree of the subsystem,and judge the obstacle factors affecting the development of Xi’an.The results show that:the carrying capacity of land resources in Xi’an has increased from 0.2727 to 0.7379,and the rate of increase is fast,and there is still a lot of room for development;The contribution of capacity improvement is relatively large,and the increase in population and ecological carrying capacity is small;The changes in the level of land carrying capacity and the degree of coupling coordination in Xi’an have a high degree of similarity,and the two show a strong correlation.During the period,both of them increased synchronously;The degree of population barriers>economic barriers>social barriers>ecological barriers;from the perspective of barriers,population density,natural population growth rate,per capita food occupancy,and air quality rate are the impacts The main factors for the development of land resource carrying capacity in Xi’an,and the research accords with the economic and social development of Xi’an.